73288939 has 4 divisors (see below), whose sum is σ = 73309600. Its totient is φ = 73268280.

The previous prime is 73288927. The next prime is 73288949. The reversal of 73288939 is 93988237.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73288939 - 2¹³ = 73280747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73288892 and 73288901.

It is not an unprimeable number, because it can be changed into a prime (73288949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3507 + ... + 12604.

It is an arithmetic number, because the mean of its divisors is an integer number (18327400).

Almost surely, 2^73288939 is an apocalyptic number.

73288939 is a deficient number, since it is larger than the sum of its proper divisors (20661).

73288939 is a wasteful number, since it uses less digits than its factorization.

73288939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20660.

The product of its digits is 653184, while the sum is 49.

The square root of 73288939 is about 8560.8959227408. The cubic root of 73288939 is about 418.4845974289.

The spelling of 73288939 in words is "seventy-three million, two hundred eighty-eight thousand, nine hundred thirty-nine".